Zarrillo, J. (2000). Teaching elementary social studies: Principles and applications. Merrill.
Lua i Stíl Chicago (17ú heag.)Zarrillo, James. Teaching Elementary Social Studies: Principles and Applications. Upper Saddle River, N.J: Merrill, 2000.
Lua MLA (9ú heag.)Zarrillo, James. Teaching Elementary Social Studies: Principles and Applications. Merrill, 2000.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.